An amateur's introduction to recursive query processing strategies
SIGMOD '86 Proceedings of the 1986 ACM SIGMOD international conference on Management of data
Traversal recursion: a practical approach to supporting recursive applications
SIGMOD '86 Proceedings of the 1986 ACM SIGMOD international conference on Management of data
Design of an external schema facility to define and process recursive structures
ACM Transactions on Database Systems (TODS)
Universality of data retrieval languages
POPL '79 Proceedings of the 6th ACM SIGACT-SIGPLAN symposium on Principles of programming languages
Alpha: An Extension of Relational Algebra to Express a Class of Recursive Queries
Proceedings of the Third International Conference on Data Engineering
An Example of Knowledge-Based Query Processing in a CAD/CAM DBMS
VLDB '84 Proceedings of the 10th International Conference on Very Large Data Bases
Toward a General Spatial Data Model for an Object-Oriented DBMS
VLDB '86 Proceedings of the 12th International Conference on Very Large Data Bases
Browsing in chip design database
DAC '88 Proceedings of the 25th ACM/IEEE Design Automation Conference
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Part Hierarchies are a fundamental datatype in CAD applications. But intelligent and efficient processing requires major extensions to DBMS data models, query languages, and processing algorithms. We explore formulations and execution algorithms for path-traversal queries. Hierarchy semantics are then exploited for spatial data and to intelligently choose an appropriate detail level for query output.